void udpRead(void)
{
    int packetSizeRcv=udp.parsePacket();
    char buf[4];
  if(packetSizeRcv==4)
  {
    udp.read(buf,packetSizeRcv);
    if(buf[0]==verify[0]&&buf[1]==verify[1])
    {
      dacWrite(DAC1, buf[2]);
      dacWrite(DAC2, buf[3]);
    }
    eepdata[0]=buf[2];
    eepdata[1]=buf[3];
    EEPROM.write(0, eepdata[0]);
    EEPROM.write(1, eepdata[1]);
    Serial.println();
    Serial.print("led  are  ");
    Serial.print((int)buf[2]);
    Serial.print("\t");
    Serial.println((int)buf[3]);
  }
  
}
